Electrical manicure file for nails



April 18, 1950 A. BIAS] 2,504,795

ELECTRICAL MANICURE FILE FOR NAILS Flled April 23, 1947 IN V EN TOR. ANGELO BIASI Patented Apr. 18, 1950 OFF 2,504,795; Y macfmiczmaramcnaagmamammals;

meal-nae, naneznngrn, alignment 51 5115121; 1947;,serimw mace The: presentinvention relates" to manieurmgi implements; and more particularlyto naiifiles vof the eIectricaIIyenergiZedttype ln which the Heis: actively reciprocated by an electromagnetic vibratory mechanism.

An-object of the-invention-is-topmvide an'elec trically drivennail' fii'ein which the ahrading'eie ment is actuated by a mechanism which-is simple inconstruction, effective initscperation and in expensive to manufacture.- Aiurther objectoi-"the'inventicn is;to.provide a me of this which the abrading-"surface is readily-removable-forreplacement and in--which.- this surface maybe of- 'such construction so-that"- it 'may-be discarded afterasingle use.

From another aspect; the inventioncontemplates acompactunit'ary electricaiiy 'actuated-fl1eproportionedin its-dimensions to fit the'hand of the user of the device, ami shapediorconvenience ofmanipulation in the filing-oi." nails:

For further comprehension of the invention, and of the objects and-advantagesthereof; ref-'- erence wilibe had'to thefollowing description and-*accompanying drawing; and 'tctheappended claimsin whichthe various; novelfeatures of the invention are more particularly set-forth.

In the accompam'ing drawing forming-a mate-' rial part of this disclosure: 7

Fig: 1 shows-a top plan view-of an embodiment !-'theinvention with the'cover in place;

' Fig. 2- shows-a bottom planview-of-theembodiment of Fig. 1 with the cover removed.

Fig; 31s a-v-iew in elevation-of the side elevatlcnalviewnf 1; f El ig; 4 isa.- perspectivewiew: of; the removable ahrading -element;

Figzfi is: a view inperspective oi'ia spring whieh forms-.aipart of:the-embodimentloathe .imentlon: shown'inthepreceding figures.

The manicur ing"implement; according to the- Casing" lilz'may beeonstructed in tween more sections to facilitate assembly during manufactut-e and tonermitdisassemhiy for-maintenance: and' mayhe moldedswtableelectrical insu-i.

latingymateriak fmmsvthei casing 114;; thuei 'anwsciilamry membea-M otffibrons- 55 terial, 'to'--wiii cha head l'l is' pivctaily-secured lfl a screw 19. An abrading suriace [Eisvionned of thin resilient material" and is seoured to: the head IT byinwardly extendingedge portions:

and 2| which grip correspondingly-shaped ec'l'g esa oi-thehead l1: Abrading surface l-fl furthen-com prises a tongue portion having-a1netch 23* therein which is adapted to engage the semicir cula-rhead of a screw 2 l: The semicircularshaped head'of screw ZA faciIitatesrapid-attachment or removal of the abrading surface WTr-om-the -=1eafi l1: The-,tongue-portion- 22' providesa resiiienti. spring actionbetween the head I T- and theoscil' latory member l6 and permits the-ahradingsur face: to be brought yieldingly intoengagementclamped "to a: non-magnetic 'm'etai support: 28

adjustable block" 29; support- 2 8' being:-pnovided =j with arr-aperture adapted to receive ami engage a projection 30 formed bybending the-enciW'fi hinge member-21. Support 28' iscarriedfiby: magnei'fizable base-piateil and: is preferahiy-iikewisw made of magnetizable materi'ai'.

An armature 32 l of amagnetizablematerial is secu-red'to hinge member 21 andfis bent to rotrude through an opening in the non-magnetic metai guide member 2B.= osciiiatorywmember 15' also:

passesthroughthe openin in guide member 26:

A pair-oi ei'ectromagnets-iii and 3.3 are dispose/d3 in proximity'to armature-3L The magnets+33 an 33 are-secured to base platei I;

A- spring 34 which: may be formedof wire as; indicatedY- in Fig; 5; engagesa:hookdi carriedt by the armature 32 Th coil portions,- 35 35 of -the spring I 34, are supported: by a= transverse pin 31 i carriedby the support 2 8. Theoutwardly extend ing portions of 'th'e: spring 3fl==engage =tiie adiiust-v;

able-block 29- whose: position 1 may -be=varied to regulate :the tension exerted' onithe' armature 32: A ost 38- is disposed to" engage a stoo meme ber' 39' carried 'by the' armature--- 32'? The a r rangement is preferably such that" con-tact be tween the: post 33 and the ston member- 3 Swiil prevent oonta'ctbetween the armature-.ormamsi carried ther ehy pole faces of anneal-0 magnetsiiandifif. hencaicompressionrspflnee lfizis'rcarrledihy: the 350st: 38 and-engages: 83pmjection 4| which is secured to the armature 32. The action of the spring 40 aids the tension provided by the spring 34. The tension provided by the spring 34, however, is adjustable in magnitude whereas the tension provided by the helical spring 40 is relatively fixed.

Magnets 33 and 33' are connected to terminals 42 and 43. The conductors from the flexible cord l2 are terminated within the device, one of them being secured to terminal 42 and the other conductor extending through switch [3 to terminal 43.

In operation, the attachment plug H is in I serted in a convenient outlet adapted to supply alternating current of suitable voltage. Switch I3 is then operated to establish electrical conthereof adapted to support an end of the armature means, an oscillatory member carried by the other end of the armature means, a carrier member pivotally secured to the armature mem- -ber,- resilient means including an abrading surtinuity to the magnets 33 and 33'- whichv are thereupon energized by the alternating current.

This energization of the magnets 33 and 33' sets up a pulsating electromagnetic field which exerts a correspondingly pulsating attraction on the magnetizable armature 32. a vibratory force exerted on the armature 32 which produces the required motion of the oscillatory member I6. The resulting vibratory motion is thus transmitted to the abrading surface l8 which may be brought into contact with a nail to-effect the desired filing action.

In order to secure a maximum response from the mechanical system, this may be adjusted if desired, to have a natural period which is approximately the same as that of the pulsating force set up by the magnets 33 and 33'. .Ap-

proximate resonance may be obtained by the characteristics of helical spring 40 and a more exact degree of mechanical tuning may be obtained by varying the osition of the adjustable block 29 to alter the tension exerted by the spring 34.v In this manner a maximum amount of motion can be obtained, with any particular degree of the energization of magnets 33 and 33'.

While I have illustrated and described the.

preferred embodiments of my invention, it isto be understood that I do not limit myself to the precise constructionsherein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, 'what I claim as new, and desire to secure by United States Letters Patent is:

-1. In a device of the class described, a frame member, a magnetizable plate carried by the frame member, a pair of electromagnets having cores and pole faces, the cores being secured to the magnetizable plate in a manner, adapted to produce a magnetic circuit extending between the two pole faces and including a portion of the magnetizable plate, armature means disposed in operative-proximity to the pole faces, a flexible hinge member having one portion thereof secured in fixed relationship with respect to the frame member and another portion thereof adapted to support an end of the armature means, an oscillatory member carried by the other end of the armature means, a carrier member pivotally secured to the armature member,

and further comprisinga tongue. portion resiliently interconnecting the resilient means and This results in face removably secured to the carrier member and further comprising a tongue portion resiliently interconnecting the resilient means and r the oscillatory member and disposed to permit the abrading surface to be brought into yielding engagement with a surface to be abraded, said device comprising adjustable spring means oper atively associated with the armature means.

. 8. In a device 'of the class described, a frame member, a'; magnetizable plate carried by the frame member, a pair of electromagnets having cores and pole faces, the cores being secured to the magnetizable plate in a manner adapted to produce a magnetic circuit extending between the two pole faces and including a portion of the magnetizable plate, armature means disposed in operative proximity to the pole faces, a flexible hinge member having one portion thereof secured in fixed. relationship with respect to the frame member and another portion thereof 'adapted' to support an end of the armaturedevice comprising stop means disposed to pre-- the oscillatory member and disposed to permitthe. abrading surface to be brought into yielding engagement with a surface to be abraded. 7"."

.. 2,- -In adevice of the class described, a frame.

means, an oscillatory member carried by the other end of the armature means, a carrier member pivotally secured to the armature member, resilient means including an abrading surface removably secured to the'carrier member and further comprising a tongue portion resiliently interconnecting the resilient means and,

the oscillatory member and disposed to permitthe abrading surface'to-be brought into yielding:

engagement withya surface to be abraded; said cores and pole faces, the cores bein secured to; the magnetizable plate in a manner adapted-j to,

produces. magnetic circuit extending between the two pole faces and including a portion ofthe magnetizable plate, armature means disposed in operative proximity to the pole' faces; a flexible hinge member having one portion thereof secured in fixed relationship with respect to the frame member and another portion thereof adapted to support an end of the armature means, anoscillatory member carried by the.- other end of the armature means, a carrier member piv'otally secured to the armature member-, resilient means including an abrading surface re-q movably secured to the carrier member and furthercomprising a, tongue portion resiliently interconnecting the resilient means and the Oscillatory' member and disposed to permit theabrad s mg surface to be brought into yielding engageag ment withf'a surface-to be abraded, said device:

comprising means adapted to permit energization of the electromagnets from a source of alternating voltage and further comprisin adjustable spring means disposed to produce mechanical resonance of the armature means at a frequency whose ratio to the frequency of the alternating voltage is substantially equal to a rational number.

5. A manicuring implement comprising an elongated frame member, a support mounted on said frame member adjacent the rear end thereof, a guide member mounted on said frame member adjacent the front end thereof and formed with an opening, a hinge member adjustably connected to said support, an armature mounted on said hinge member and having its free end extended into the opening of said guide member, means for producing oscillatory motion mounted on said frame member between said support and said guide member, and beneath said armature to oscillate the fre end of said armature within the opening of said guide member, an abrading head mounted on the free end of said armature to oscillate therewith, spring means urgin said armature in a direction away from said oscillatory motion producing means, and means limiting movement of said armature in a direction toward said oscillatory motion producing means under th influence of said means.

6. A manicuring implement comprising an elongated frame member, a support mounted on said frame member adjacent the rear end thereof, a guide member mounted on said frame member adjacent the front end thereof and formed with an opening, a hinge member adjustably connected to said support, an armature mounted on said hinge member and having its free end extended into the opening of said guide member, means for producing oscillatory motion mounted on said frame member between said support and said guide member, and beneath said armature to oscillate the free end of said armature within the opening of said guide member, an abrading head mounted on the free end of said armature to oscillate therewith, spring means urging said armature in a direction away from said oscillatory motion producing means, and means limiting movement of said armature in a direction toward said oscillatory motion producing means under the influence of said means, said limiting means comprising a post mounted on said frame member adjacent said guide member and beneath the free end of said armature, and a stop member on said armature in alignment with said post to strike said post when said armature is moved toward said post by said oscillatory motion producing means.

7. A manicuring implement comprising an elongated frame member, a support mounted on said frame member adjacent the rear end thereof, a guide member mounted on said frame member adjacent the front end thereof and formed with an opening, a hinge member adjustably connected to said support, an armature mounted on said hinge member and having its free end extended into the opening of said guide member, means for producing oscillatory motion mounted on said frame member between said support and said guide member, and beneath said armature to oscillate the free end of said armature within the opening of said guide member, an abrading head mounted on the free end of said armature to oscillate therewith, sprin means urging said armature in a direction away from said oscillatory motion producing means, and means limiting movement of said armature in a direction toward said oscillatory motion producing means under the influence of said means, said limiting means comprising a post mounted on said frame member adjacent said guide member and beneath the free end of said armature, and a stop member on said armature in alignment with said post to strike said post when said armature is moved toward said post by said oscillatory motion producing means, and auxiliary resilient means on said post and operating between a fixed part of said armature and said frame for assisting said spring means in urging said armature away from said oscillatory motion producing means.

8. A manicuring implement comprising an elongated frame member, a support mounted on said frame member adjacent the rear end thereof, a guide member mounted on said frame member adjacent the front end thereof and formed with an opening, a hinge member adjustably connected to said support, an armature mounted on said hinge member and having its free end extended into the opening of said guide member, means for producing oscillatory motion mounted on said frame member between said support and said guide member, and beneath said armature to oscillate the free end of said armature within the opening of said guide member, an abrading head mounted on the free end of said armature to oscillate therewith, spring means urging said armature in a direction away from said oscillatory motion producin means, and means limiting movement of said armature in a direction toward said oscillatory motion producing means under the influence of said means, said limiting means comprising a post mounted on said frame member adjacent said guide member and beneath the free end of said armature, a stop member on said armature in alignment with said post to strike said post when said armature is moved toward said post by said oscillatory motion producing means, said armature having a portion extending along one side of said post, a projection mounted On said portion of said armature and slidably engaging said post, and an expansion spring on said post operatin between said projection and the adjacent face of said frame member for assisting said spring means in urging said armature in a direction away from said oscillatory motion producing means.

ANGELO BIASI.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 957,982 Moon May 17, 1910 1,832,437 Wahl Nov. 17, 1931 1,881,737 Lidseen Oct. 11, 1932 2,258,857 McCann Oct. 14, 1941 

